<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <title>产品月销量</title>
  <style>
    body {
      font-family: Arial, sans-serif;
    }
    table {
      width: 60%;
      margin: 20px auto;
      border-collapse: collapse;
      text-align: center;
    }
    th, td {
      border: 1px solid #dd1144;
      padding: 10px;
    }
    th {
      background-color: #f2f2f2;
    }
    .total {
      background-color: #cce5ff;
      font-weight: bold;
    }
  </style>
</head>
<body>

  <h2 style="text-align: center;">产品月销量</h2>

  <table>
    <tr>
      <th>ID</th>
      <th>产品名称</th>
      <th>销量</th>
    </tr>
    <tr>
      <td>2021090901</td>
      <td>马克杯</td>
      <td>5000</td>
    </tr>
    <tr>
      <td>2021090901</td>
      <td>啤酒杯</td>
      <td>5200</td>
    </tr>
    <tr>
      <td>2021090901</td>
      <td>塘瓷杯</td>
      <td>3500</td>
    </tr>
    <tr class="total">
      <td colspan="2">合计</td>
      <td>13700</td>
    </tr>
  </table>

</body>
</html>